Starting-valve for gas-engines.



M. ASLAKSON. STARTING VALVES'I'OR GAS ENGINES. I J I APPLICATION FIILED 001214, 1907. RENEWED JUNE 2, 1911.

1,009,626.. Patented Nov. 21,1911] cam mounted thereon, in relative relation to.

U T D STATES PATENT OFFICE.

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To all 41 7mm a may concem: i Be it known that I, BAXTER M. ASLAK- son, a citizen of the United States, and .a

resident'of Salem, in the county of Columl biana and State of Ohio',have invented certain new and useful-Improvements in'Startfollowing is a specification.

My invention relates to starting, means ing-Valves for GasEngines, of which the .for gas enginesand the object of my inven-' tion isto providea novel, simple andhighly be efiicient device by means of which a gas en gine may be started by compressed air or other gas. Referrin to the drawings which form a part of this specification. Figure 1, is a longitudinal sectional view through the easing, disclosing the valves therein, and the cam meansby which one of said valves is operated. Fig. 2, is a cross sectional view of the drivingshaft, and a side view of the the end of the valve stem. Fig. 3,.is' an end view of the valve casing, viewed. from the lower side of Fig. 1, with the valves removed, and Fig. 4, is a cross sectional-view of the valve casing on line (Ii- 2: of Fig. 1, as it would appear when removed from the cylinder casing.

-- A, indicates a section o'f'a gas engine cylinder and A the interior. surface thereof.

A, is a recess in the ,cylinder casing A, preferably cylindrical inform and adapted to receive the end B- of the casing B. Located in casing B, is a mechanicallyoperated valve 0, the stem ,0 of which extends through an extended guide-way B The valve C, is introduced into the casing B,

through an opening B, which opening is valve stem, and is adjusted in afterward closed by a plug D. An automatically operated valve E, is

seated on the end of the casing B, and the valve stem thereof is supported ina guide which is cast integral with the casing B, shown clearly in Fig. 4, and'indicated by B. The valve stem E, extends beyond one end ofsaid support and carries a collar F,

through which the valve stem freely slides. This collar is provided with a shoulder E which serves as an abutment forione end of resting and abutting against a similar collar H, which is also freely slidable on said 'tion b nuts I and J, thus, making to increasing or d the tension of the 'Sp q of L t lfa Patented Nov. 21, 1911 Application filed October 14, 1907, Serial no. 397,111.

Renewed June 2, 1911. Serial No. $0,917.

spring G. The spring, collars and nuts are introduced into the casing through an opening K,'in thecasing B, and closed by a plug L.;- A flange M, is formed integral with the casing B, (-Fig. 3) and'provided with holes through which bolts may be projected to bolt the casing B to the casing A.-

N, indicates an extension of the casing B, and O a pipe connected thereto through whirih compressed gas is conducted to chamr 4 Q, isa driving shaft on which iskeyed a cam R, which are driven in timed relation with the stroke of the engine. Other suitable means may be used to, operate valve C, "in placeof thewam, if desired.

Compressed air is admitted through pipe 0 to the chamber P, and when the piston of the operating engine is in position-to begin its power stroke, the. cam R will' press against 0 against the air pressure in chamber P. The air will flow through conduit S and engine cylinder through port A, thus startingthe engine, as will be readily understood. As soon as the engine beginsto operate under the explosions of the gas mixtures in the cylinder, the valve E will instantly close due der, regardless of the position of valve C. After the engine has been started, the air may be shut off from the chamber P by a shown in the drawings. The device embodies a simple construction not easily disarranged and is now in ractical use.

Having thus describedPmy'invention, what 'I claim as new and desire to secure by Letters Patent, is,-- Q

.1. Ina start device for ex losive engines,-a valve casing, a valve C, t e stem C ,of which extends through an extended guide-way B and is so arranged as to be operated by the engine, the valve 0 admitting compressed air from a. supply pipe through .a conduit S, to a'second valve E, which is arranged parallel to the valve C in the valve casing, the valve E-admitting the compressed airbehind the piston of the engine to start the same; the valve G being automatically thrownopen and'out of operation when t e air is cut of! from communi cation therewith.

2. In a starting device for gas engines, a

The operation ofathe device is as follows.

valve located in pipe 0, which valve is not the end of valve stem C thusopening valve chamber T and open valve E, entering the to the increased pressure in the engine cylinj valve casing, a valve C arranged therein and adapted to be operated by the engine and to admit compressed air from a supply pipe through a conduit S toa second valve 1* the stem E of which is supported in a guide 13* which is cast integral with the valve casing, the stem E extending beyond one end of the guide B and having a spring G arranged between collars F and H, and means for increasing or decreasing the tension of the said spring; the valve E admitting the compressed air behind the piston of the engine to start the same.

Signed at Salem in the county of Columbiana and State of Ohio this sixteenth day of September A. D. 1907.

BAXTER M. ASLAKSON.-

Witnesses:

HARRY DEWEES, R. B. CAREY.

' Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

